sereno

calm, serene

s e ˈɾ e n o
adjective Rare #42,573
calm, serene Often used to describe a calm mood, attitude, or atmosphere. Note: as an adjective, it must agree in gender/number; this example uses the masculine singular form "sereno".
SP: Él mantuvo un tono sereno durante la reunión.
EN: He kept a calm tone during the meeting.

Tom era calmado y sereno.

Tom was calm and serene.

Es muy bueno con el revólver cuando está sereno.

He's very good with a revolver when he's calm.

Debo mantenerme sereno.

I must remain calm.

— El brazo de brillantes (1969)

Siempre sereno, dueño de ti mismo.

Always serene, master of yourself.

— Picnic (1955)

Estaba calmado y sereno.

He was calm and serene.